71728748 has 36 divisors (see below), whose sum is σ = 157257072. Its totient is φ = 28375200.

The previous prime is 71728733. The next prime is 71728751. The reversal of 71728748 is 84782717.

It is a junction number, because it is equal to n+sod(n) for n = 71728699 and 71728708.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11528 + ... + 16623.

It is an arithmetic number, because the mean of its divisors is an integer number (4368252).

Almost surely, 2^71728748 is an apocalyptic number.

It is an amenable number.

71728748 is an abundant number, since it is smaller than the sum of its proper divisors (85528324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71728748 is a wasteful number, since it uses less digits than its factorization.

71728748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28182 (or 28173 counting only the distinct ones).

The product of its digits is 175616, while the sum is 44.

The square root of 71728748 is about 8469.2826142478. The cubic root of 71728748 is about 415.4936748530.

The spelling of 71728748 in words is "seventy-one million, seven hundred twenty-eight thousand, seven hundred forty-eight".